Round: 27 Ground: Hardcourt outdoor
| ITF Japan F8 | 2016/06/16 01:00 | Renta Tokuda v Takuto Niki | 6-3,7-6 |
| ITF Japan F8 | 2015/06/25 01:00 | Renta Tokuda v Takuto Niki | 2-6,7-6,6-3 |
| Challenger Yokohama | 2017/03/01 01:00 | Andrew Whittington v Takuto Niki | 6-4,7-6 |
| Challenger Yokohama | 2017/02/28 02:20 | Takuto Niki v Masato Shiga | 6-1,6-1 |
| Challenger Yokohama Qual | 2017/02/27 01:00 | Alex Bolt v Takuto Niki | 2-6,4-6 |
| Challenger Yokohama Qual | 2017/02/26 03:20 | Hiroyasu Ehara v Takuto Niki | 7-6,1-6,3-6 |
| Challenger Yokohama Qual | 2017/02/25 06:00 | Takuto Niki v Axel Michon | 6-2,2-6,7-5 |
| Challenger Kyoto Qual | 2017/02/19 03:20 | Alex Bolt v Takuto Niki | 6-4,6-7,6-2 |
| Challenger Kyoto Qual | 2017/02/18 05:25 | Yunseong Chung v Takuto Niki | 2-6,6-7 |
| Challenger Burnie | 2017/01/30 23:00 | Maverick Banes v Takuto Niki | 6-3,4-6,6-2 |
| Challenger Yokohama Qual | 2017/02/25 01:00 | Brydan Klein v Renta Tokuda | 2-6,7-5,6-1 |
| Challenger Kyoto Qual | 2017/02/18 01:00 | Yusuke Watanuki v Renta Tokuda | 6-4,4-6,6-1 |
| ITF USA F6 | 2017/02/05 15:00 | Tommy Paul v Renta Tokuda | 6-3,4-6,6-3 |
| ITF USA F6 | 2017/02/04 15:30 | Felix Auger Aliassime v Renta Tokuda | 4-6,6-7 |
| ITF USA F6 | 2017/02/03 15:00 | Naoki Nakagawa v Renta Tokuda | 1-6,2-6 |
| ITF USA F6 | 2017/02/02 16:35 | Winston Lin v Renta Tokuda | 6-3,4-6,4-6 |
| ITF USA F6 | 2017/01/31 15:00 | Renta Tokuda v Tomas Lipovsek Puches | 6-4,6-3 |
| ITF USA F5 | 2017/01/22 15:00 | Renta Tokuda v John McNally | 4-6,1-6 |